Additional file 8.

Distributions of the spread on the triangle plot and of the Ks and nucleotide identity
per region. Figure S1: Distance distribution or spread of the normalized Ks values on the triangle
plot. Blue line represents the median, red line the mean. Figure S2: Distribution
of Ks and nucleotide identity in different subsets of the UGA10 genome. All x-axes
are in logarithmic scales. Left panels: nucleotide identity, in percent. Identical
gene pairs are not displayed. Right panels: Ks. Gene pairs for which Ks = 0 are not
displayed. Upper panels: box-and-whiskers plots. The black dot is the mean of the
distribution, the box extends around the quartiles 2 and 3 (percentiles 25 to 75),
defining the interquartile distance (IQ). Outliers are all marked with an open circle,
and are considered as such if they are smaller than percentile 25–1.5 IQ or greater
than the percentile 75 + 1.5 IQ. Whiskers extend between the smallest and the largest
non-outlier values. Lower panels: distributions for each group of genes. Individual
values are scattered on the bottom of the plot.